SEA → MKESeattle to Milwaukee

live

Direct flights from Seattle (SEA) to Milwaukee (MKE): 7 nonstop departures observed each week across 1 airline. 100% of the last 7 operated flights arrived within 15 minutes of schedule. The median arrival is 17 minutes early. No cancellations were recorded across the 7 tracked flights. The nonstop covers 2,719 km, an estimated 3 hours 59 minutes in the air. Measured by Pro Flight Search from live flight boards at Seattle and Milwaukee. Updated 10 October 2026 at 20:05 UTC.

SEA Seattle heavy · +30
MKE Milwaukee smooth · +0
2,719 km · ~3h 59m est.
departs 09:007x weekly
Runs reliable · 1 airline · 7x weekly · nonstop
100% on time

of the last 7 operated SEA → MKE flights arrived within 15 minutes

Median arrival delay is −17 min. 0 of 7 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →

Median arrival−17 minacross the last 7 operated legs
Flight time~3h 59mestimated from route distance
Weekly departures7x1 direct airline on the leg

Who flies it

observed on the boards · 7 days
Alaska AirlinesAS100% on time

Flights AS507 varies daily

History

operated legs · board outcomes
10-09AS507arrived−32
10-08AS507dep +34 → arr−11
10-07AS507arrived−24
10-06AS507arrived−24
10-05AS507arrived−17
10-04AS507arrived−12
10-03AS507arrived−3

Actual board outcomes rather than schedules, paired departure and arrival per flight and day.

Full board history, day by day →

Airports right now

live boards
SEASeattle +30 min heavy 🌤 mostly cloudy · N 0 kt Full SEA delay board →
MKEMilwaukee +0 min smooth 🌤 scattered clouds · SSW 11 kt Full MKE delay board →

Weather lens

Current conditions put the pressure at MKE: 41% odds of a 15+ minute delay and around +11 min expected when it bites, measured from this route's own weather-matched delay history. See live delays → · Weather risk by airport →

How the Seattle to Milwaukee route actually runs

Pro Flight Search records official board updates for nonstop SEA to MKE flights through the day: schedules, estimates, gate pushes and actual departures. The verdict above comes from operated flights, so it reflects what this route does rather than what the timetable promises.

Planning around a delay? Live airport delays · Weather delay risk map · Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure

Cite this data

Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.

Suggested citation

Pro Flight Search — Seattle (SEA) to Milwaukee (MKE) route reliability, measured from operated flights on official airport boards.

Canonical URL
https://proflightsearch.com/search-flights/SEA-MKE
How we measure this →

SEA to MKE questions

Is SEA–MKE running on time right now?

Mostly on schedule. The departure side at SEA is the weaker end, route health score 80/100. The airports section above carries the live status and delay window at both ends.

How long is the flight from SEA to MKE?

Great-circle distance is 2,719 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 222–263 min gate-to-gate on this route.

How often does SEA–MKE fly?

Alaska Airlines runs the route with about 7 flights a week (daily). Since one carrier owns the route, a single disruption tends to ripple through the day.

What does the route health score measure?

A blend of departure-side delay at SEA and arrival-side delay at MKE, computed from rolling delay windows (refreshed every 40 minutes) with a daily-rollup fallback. Current MVFR, IFR, or LIFR endpoint weather caps the score when flight rules can limit throughput. Higher is healthier: 100 means operations are clean at both ends.